Disclaimer: I don't own httyd

Warning: This chapter would be more graphic than the last one so please don't be offended… I know that lemons really aren't my thing but you have to understand that when it comes to horny teenagers the possibilities are endless :D

AN: In this chapter, Stoick would be 18 and for the readers' perspective, he looked like Hiccup except he's buffer and had a lot more hair.

Agna, on the other hand, looked like her daughter, Heather, in this story at least. The only difference they had was that Agna had a more voluptuous figure.

Oh, one more thing, expect some lemons…

Arc: A Stormy (W)Heather Approaches

Days Until Wedding: 15 years and 1 and a half month

"Should We Stop"

Agna wrapped the blankets all over her naked body as Stoick paced through the room. What should he do? He made a mistake last night. He looked towards Agna and couldn't help but admire her beauty.

Gak! Stop fantasizing about her! He mentally scolded himself. Sure, she was beautiful and she would probably be an amazing catch if he wasn't already married. The thing was, their marriage wasn't based on love and they were forced on each other. He sighed. He couldn't help it. He was smitten by the girl infront of him.

He approached her and noticed that she tightened her hold on the blankets around her. He sat on the bed and sighed again.

"Look, I know what happened last night was an accident but to tell you the truth, I want to know you better" Stoick said as calmly as he could without worrying her even more.

"Yo-you're not mad at m-me?" Agna shyly asked.

Stoick raised an eyebrow "Why would I be mad at you? Both of us were drunk last night and couldn't help ourselves." Stoick scooted closer to her "And you know what they say, drunken people are the most honest people around."

Agna relaxed a little bit and finally looked at Stoick. She had to avert her gaze because all she could see was admiration from him and she couldn't help but feel happy about it.

She hadn't noticed that Stoick was already infront of her and was arms reach. Stoick reached with his hand and touched her face. She leaned on his warm hand and couldn't help sigh in contentment.

"Agna?"

"Yes?"

"Is it ok if I got to know you even better? I mean, it's not that I'm taking advantage of you or anything but…" she stopped him by putting a finger on his mouth.

"It's ok" Agna smiled as she shyly removed the blankets around her.

Stoick couldn't help but stare at her "Wow…" he said in awe, absorbing the view infront of him "You're so beautiful"

Agna couldn't help but blush. "Thanks"

Stoick didn't know what got in him but he leaned forward and captured her lips one more time. Agna wrapped her arms around Stoick's head and couldn't help but sigh in contentment. They knew they shouldn't do this. They knew what they're doing was wrong. But the temptation was too strong.

Stoick once again pushed her on the bed until she was lying down and he was on top of her. This time though, Agna rolled them around and she was on top. She descended until she was infront of Stoick's member. She gave a tentative lick and Stoick gasped. She liked the reaction so she did it again. Stoick had to steel himself because he didn't know when he was going to release.

She eventually got tired of licking and engulfed his member in her mouth. Stoick groaned. This was the best thing he ever felt for as long as he could remember. Agna started bobbing her head back and forth. Stoick's breathing started to quicken as he gripped on the sheets behind him. It wasn't long when Stoick reached his limit and released his fluids inside her mouth. She didn't even flinch as she swallowed until the last drop.

"That… was… amazing…" Stoick panted as he covered his eyes with his forearm.

"I'm not done with you yet" Agna seductively said as she positioned her bosom infront of Stoick's still throbbing member. Stoick removed her forearm and looked at her. She was even more beautiful from that angle. Stoick almost lost it as Agna covered Stoick with her breasts. She squeezed it between them and once again put the head inside her mouth. She once again started bobbing her head back and forth while moving her breasts up and down.

Stoick even came faster this time around and could feel most of his strength to dissipate. He continued to pant and he was already sweating like a pig. Agna still continued to play with Stoick's member even after he released his load.

Agna finally got tired and position herself on his lap.

Stoick raised an eyebrow as she hovered above him "Are you going to do what I think you're going to do?"

Agna just smiled seductively as she lowered herself. He was inside her again and she couldn't help but release a moan as she could feel his vastness. Stoick grabbed her waists and lifted her up and put her down. That motion made him go deeper inside her and forced another moan to come out from her.

"Yes… Stoick…" she whispered his name like it was from the gods themselves. Stoick flipped them over so he was on top again and started moving his body. Agna was the one who grabbed the blankets this time and had to bite her hand to stop herself from screaming bloody murder. Stoick's motions quickly hastened and she braced herself as she was about to reach her climax.

"Nnngggghhh!" She arched her back as Stoick released his load inside her and she climaxed at the same time. They both panted and Stoick lied on top of her, his member still deep inside her.

"Now that was worth remembering." Stoick said in her ear. Agna nodded and started rubbing his back.

They both knew what was gonna happen next. They would leave the island at opposite directions and never see each other again. They knew that that was inevitable so they had to make use of the time they had left. Stoick raised his head and rested his forehead against hers. They stared intently at each other and smiled briefly before kissing once again. Stoick once again started his rhythm and she gasped in his mouth.

-Sometime later-

Stoick and his men hoisted their newly bought supplies back to their ships and readied themselves to depart back to Berk. Stoick removed some sweat from his face and looked at the busy people on the port area. He was looking for her. They haven't seen each other since they left the room earlier. He gave up and sighed as Gobber called him to help him carry a huge crate.

Agna was standing behind a pole, sighing. She wanted to be with him but they could never be. Stoick was a married man. She learned from that from one of his men when he was boasting about his chief. Agna let a single tear roll down her face since she was in public. She would probably cry herself to tears for the man she couldn't be with. She walked away knowing that that was the last time she would be able to see the one she truly loved.

-End of Flashback-

AN: Note, Stoick only told the kids about after the first night… He didn't remember anything from what happened when they were drunk.

Stoick sighed as he finished his story. "That's it. I got drunk and when I woke up I was stark naked with a woman I didn't know."

Hiccup sighed as his father told the story. He couldn't believe it. He looked at Heather and noticed that she looked like she was about to cry.

"So it is true" Heather whispered "You're really my father?"

Stoick sighed once again and looked down in shame "I'm afraid so. Listen, both of you, I know that me and Agna did was unforgivable but…" Stoick was cut short as Heather hugged him tightly

"I don't care what happened and I don't care why. All I care about is the fact that I finally got to see my real dad" Heather cried as she hugged Stoick. Stoick eventually returned the hug.

Astrid approached Hiccup as father and daughter had a moment. She nudged him and motioned him to go to the other room. Hiccup nodded and followed suite.

"How're you doing?" Astrid asked when they were far enough.

Hiccup sighed "Honestly? I don't know. I mean, I'm not mad at dad for what he did but…" Hiccup sighed once again and sat on a chair "I can't believe I had a crush on my sister"

Astrid furrower her brows "Wait what?" she glared at him and crossed her arms "So you did have a crush on her" she accused

Hiccup widened his eyes and gulped loudly "Keyword Astrid, I DID have a crush on her… You know, meaning in the past… hehehe" he slowly got up and walked backwards towards the exit.

Astrid smiled sadistically and cracked her knuckles "Oh I know what you mean."

Hiccup started to sweat "Astrid, let's be reasonable about this… Can't we talk about this?"

Astrid huffed and crossed her arms once again "Fine… Explain yourself"

Hiccup smiled softly at her "I can't" he bolted out the door, leaving a dumbfounded Astrid

She gritted her teeth and clenched her fists "Why that no good… COME BACK HERE HICCUP HORRENDOUS HADDOCK THE THIRD!" she bolted after him.

AN: And there you have it… Hiccup has a sister… Who knew?! Things should get interesting ;)

Oh, one more thing… Enjoy and Review!